<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>字体标签练习</title>
</head>
<body>
    <font size="7">你好这个世界</font>,
    <font size="5" color="red">我很热情</font>,
    <font color="blue">还有些犹豫</font>
</body>
</html>